linux-kernel - Re: [PATCH 02/27] drm/bridge: ps8622: #include <linux/gpio/consumer.h>, depend on GPIOLIB

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Date:	Fri, 5 Jun 2015 13:21:43 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Arnd Bergmann <arnd@...db.de>, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 02/27] drm/bridge: ps8622: #include
 <linux/gpio/consumer.h>, depend on GPIOLIB

On Tue, May 05, 2015 at 06:32:18PM +0200, Geert Uytterhoeven wrote:
> If GPIOLIB=n and asm-generic/gpio.h is not used:
> 
>     drivers/gpu/drm/bridge/ps8622.c: In function ‘ps8622_pre_enable’:
>     drivers/gpu/drm/bridge/ps8622.c:368: error: implicit declaration of function ‘gpiod_set_value’
>     drivers/gpu/drm/bridge/ps8622.c: In function ‘ps8622_probe’:
>     drivers/gpu/drm/bridge/ps8622.c:584: error: implicit declaration of function ‘devm_gpiod_get’
>     drivers/gpu/drm/bridge/ps8622.c:584: warning: assignment makes pointer from integer without a cast
>     drivers/gpu/drm/bridge/ps8622.c:590: error: implicit declaration of function ‘gpiod_direction_output’
>     drivers/gpu/drm/bridge/ps8622.c:596: warning: assignment makes pointer from integer without a cast
> 
> Add the missing #include <linux/gpio/consumer.h> to fix this.
> 
> As the resulting driver won't work with GPIOLIB=n anyway, make
> DRM_PS8622 depend on GPIOLIB || COMPILE_TEST.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> Cc: David Airlie <airlied@...ux.ie>
> Cc: dri-devel@...ts.freedesktop.org
> ---
>  drivers/gpu/drm/bridge/Kconfig  | 4 ++--
>  drivers/gpu/drm/bridge/ps8622.c | 1 +
>  2 files changed, 3 insertions(+), 2 deletions(-)

Applied, thanks. With the same modifications as patch 1/27. I wonder if
there's any reason to keep the linux/gpio.h include, since consumer.h
seems to expose all the API that the drivers need.

Thierry

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